<template>
  <el-container class="home-container">
<!-- 头部区域 -->
    <el-header >
      <div>
        <img src="../assets/log.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button type="warning" @click="logout">退出</el-button></el-header>
    <!-- 页面主体区域 -->
      <el-container>
        <!-- 侧边栏 -->
        <el-aside :width="isCollapse ? '64px' : '200px' ">
          <!-- 折叠按钮 -->
          <div class="toggin-button" @click="togginCollapse">|||</div>
          <!-- 侧边栏菜单区域 -->
            <el-menu background-color="#e4f5ef" text-color="#001a3d" active-text-color="#00c0e6" unique-opened :collapse="isCollapse" :collapse-transition="false" :router="true" :default-active="activePath">
              <!-- 一级菜单 -->
              <el-submenu :index="item.id + '' " v-for="item in menulist" :key="item.id">
                <!-- 一级菜单的模板区域 -->
               <template slot="title">
                <!-- 图标 -->
                <i :class="iconsObj[item.id]"></i>
                <!-- 文本 -->
                  <span>{{item.authName}}</span>
               </template>

               <!-- 二级菜单 -->
                <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
                  <template slot="title">
                    <!-- 图标 -->
                    <i class="el-icon-menu"></i>
                      <!-- 文本 -->
                      <span>{{subItem.authName}}</span>
                  </template>
                </el-menu-item>
              </el-submenu>
            </el-menu>
        </el-aside>
        <!-- 右侧内容主体 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view ></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data(){
    return{
      menulist:[],
      iconsObj:{
        '125':'iconfont icon-user',
        '103':'iconfont icon-tijikongjian',
        '101':'iconfont icon-shangpin',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao',
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created(){
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  name: 'Home-a',
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 获取所有菜单
    async getMenuList(){
     const {data: res } = await this.$http.get('menus')
     if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
     this.menulist = res.data
     console.log(res);
    },
    // 菜单的折叠与展开
    togginCollapse(){
      this.isCollapse = !this.isCollapse
    },
    // 保存链接的激活状态
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang='less' scope>
.home-container{
  height: 100%;
}
.el-header {
  background-color: #bbe6d6;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color:#000035;
  font-size: 20px;
  > div{
    display: flex;
    align-items: center;
    img{
      height: 73px;
    }
  }
}

.el-aside {
  background-color: #e4f5ef;
  .elmenu {
    border-right: none;
  }
}
.el-main{
  background-color: #c8ebdf;
}
.iconfont{
  margin-right: 10px;
}
.toggin-button{
  background-color: #ade1cc;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
